Sacrococcygeal Teratoma – IV, Presenting As Abdominal Mass in a Neonate

Haleem A, Shaikh A, Bano A, Fatima K, Lal S and Ahmed S

Published on: 2025-07-17

Abstract

Sacro-coccygeal teratoma is common congenital germ cell tumor arising embryologically from multipotent cells of Henson Node, located in the coccyx. It presents as external mass with intra-pelvic component in sacrococcygeal area. Occassionally can also present as presacral and retroperitoneal mass in some rare cases.

We report the case of 18 days old female presented with abdominal distention and vomiting. Physical examination revealed uniformly distended abdomen and single huge mass palpable anteriolaterally in right side of abdomen extending upto left Mid Clavicular line.

X-Ray Abdomen showed generalized haziness with no visualization of bowel loop. Imaging revealed large cystic mass measuring (102*75 mm), Tumor markers for malignancy including B-HCG and AFP were negative.  Patient referred to peads surgery where elective surgical excision done and histopathology revealed cystic teratoma. Case concluded with diagnosis of type-IV-SACROCOCCYGEAL TERATOMA, which is very rare with no external swelling.